Replace Flex layout module with classes in RadioGroupImagesComponent

- Reformat styles

projects/common/components/input-elements/radio-group-images.component.ts

@@ -16,7 +16,7 @@ import { FormElementComponent } from '../../directives/form-element-component.di
                        [value]="elementModel.value">
         <mat-radio-button *ngFor="let option of elementModel.options; let i = index"
                           [style.pointer-events]="elementModel.readOnly ? 'none' : 'unset'"
-                          fxLayout="column" fxLayoutAlign="end center"
+                          class="fx-column-end-center"
                           [value]="i">
           <img *ngIf="option.imgSrc && (option.imgPosition === 'above' || option.imgPosition === 'left')"
                [style.object-fit]="'scale-down'"
@@ -41,14 +41,34 @@ import { FormElementComponent } from '../../directives/form-element-component.di
         {{elementFormControl.errors | errorTransform: elementModel}}
       </mat-error>
   `,
-  styles: [
-    'mat-radio-group {display: grid}',
-    ':host ::ng-deep .mat-radio-label {flex-direction: column-reverse;}',
-    ':host ::ng-deep .mat-radio-label .mat-radio-container {margin-top: 15px; margin-left: 10px;}',
-    ':host ::ng-deep .mat-radio-label .mat-radio-label-content {text-align: center;}',
-    'mat-radio-button {margin-bottom: 60px;}',
-    '.error-message { font-size: 75% }'
-  ]
+  styles: [`
+    mat-radio-group {
+    display: grid;
+    }
+    :host ::ng-deep .mat-radio-label {
+      flex-direction: column-reverse;
+    }
+    :host ::ng-deep .mat-radio-label .mat-radio-container {
+      margin-top: 15px;
+      margin-left: 10px;
+    }
+    :host ::ng-deep .mat-radio-label .mat-radio-label-content {
+      text-align: center;
+    }
+    mat-radio-button {
+      margin-bottom: 60px;
+    }
+    .error-message {
+      font-size: 75%;
+    }
+    .fx-column-end-center {
+      box-sizing: border-box;
+      display: flex;
+      flex-direction: column;
+      justify-content: flex-end;
+      align-items: center;
+    }
+  `]
 })
 export class RadioGroupImagesComponent extends FormElementComponent {
   @Input() elementModel!: RadioButtonGroupComplexElement;